package com.cyurs.netty.nettySimple.websocket;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;

import java.time.LocalDateTime;


/**
 * TextWebSocketFrame 类型表示一个文本帧(frame)
 */
public class MyTextWebSocketFrameHandler extends SimpleChannelInboundHandler<TextWebSocketFrame> {


    @Override
    protected void channelRead0(ChannelHandlerContext ctx, TextWebSocketFrame msg) throws Exception {
        System.out.println("服务器端收到消息 " + msg.text());

        //回复浏览器消息
        ctx.channel().writeAndFlush(new TextWebSocketFrame("服务器时间 " + LocalDateTime.now() + " " + msg.text()));

    }
    //当web客户端连接后、触发方法
    @Override
    public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
        //id表示唯一的标识，LongText是唯一的  ShortText不是唯一的
        System.out.println("handlerAdded被调用了"+ctx.channel().id().asLongText());
        System.out.println("handlerAdded被调用了"+ctx.channel().id().asShortText());
        super.handlerAdded(ctx);
    }

    @Override
    public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
        System.out.println("handlerRemoved被调用了"+ctx.channel().id().asLongText());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        System.out.println("异常发生" + cause.getMessage());
        ctx.close(); //关闭连接

    }
}
